
//数值型
//双精度64位浮点数，可以用来表示整数和小数
let age: number = 18;
let age2: number = 0x12;
let age3: number = 0b10010;
let age4: number = 0o22;
let pai: number = 3.1415926;
let score: number = 95.5;
let score2: number = -100;

console.log(age);
console.log(age2);
console.log(age3);
console.log(age4);
console.log(pai);
console.log(score);
console.log(score2);